HIGH 7.5 Microsoft

CVE-2026-41066

lxml: Default configuration of iterparse() and ETCompatXMLParser() allows XXE to local files

Microsoft Security Update 2026-Apr: lxml: Default configuration of iterparse() and ETCompatXMLParser() allows XXE to local files

Affected Products

cbl2 python-lxml 4.9.1-1 on CBL-Mariner 2.0
azl3 python-lxml 4.9.3-1 on Azure Linux 3.0
cbl2 python-lxml 4.9.1-1 on CBL Mariner 2.0
azl3 python-lxml 4.9.3-2 on Azure Linux 3.0

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-41066
https://nvd.nist.gov/vuln/detail/CVE-2026-41066

Published: 2026-04-14 · Source: Microsoft · Feed updated: 2026-11-08

This high severity vulnerability with a CVSS score of 7.5 was published on 2026-04-14 via Microsoft. Affected: cbl2 python-lxml 4.9.1-1 on CBL-Mariner 2.0, azl3 python-lxml 4.9.3-1 on Azure Linux 3.0, cbl2 python-lxml 4.9.1-1 on CBL Mariner 2.0 and 1 more.

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